PTT cable for radio to amplifier

I just purchased my first amplifier (Palstar LA-1K) and high power auto tuner (Palstar HF-AUTO).

Anyhow, the amp arrived today and it says I need to connect a PTT cable (customer provided) from the radio to the amp. Okay, I'm guessing it needs to be customer provided due to the different possible radios you may connect to it. (I currently have three, FT-450D, KX3, (not sure 15w can drive it at all though) and a Flex 6400)

Well, I searched and do not see any documentation about how to create one of these nor can I find a purchasable pre-made cable. I would like the ability to attach any and all of them to the amp.

Anyhow. Any guidance on making one or where to buy them for the listed radios would be great.

Most amps require a "ground on transmit" closure to activate the amp into transmit. Most amps take a male phono connector in the back. See your amplifier manual it's there. Each one of your radios probably have a different way to output that closure. Once again, your manual for each radio will tell you where/how to get that "ground on transmit". Look in each manual for each radio under "using this radio with an amplifier". Every radio has a small section dedicated to how to mate the radio with an amplifier. It will tell you what acc. connection gives you the "ground on transmit" SOME radios have a simple female phono jack just for this however lately most new radios output this through a DIN jack. Ebay sellers make up these pre-made cables for just about every radio. You could probably search Ebay for each radio and find what you want.

Check your exciter manuals. The FT-450D requires a cable part number SCU28, or you can make your own, the pin out is in the manual. The Flex uses RCA type cables, but must be configured.
Good Luck, Mike de N4MTB